Lack of knowledge by consultants

I have requested mweb fibre. The guy came to install. The lady called from customer services I clearly asked is there anything I need to do after the installation. Her answer was NO YOU CAN JUST CONNECT. Please can you tell me how do I connect as the installer says I should get the router from mweb. When I call mweb they say they do not have me on their system. I plugged my own wireless router Inn and connected. Just to find out that there is no Internet connection on this line. Please can someone assist as the longer I'm offline I lose business and I lose business I lose money! This is rediculous. I am most of the time on the road and my accountant cannot connect when he is at my property! My cell number is ***